There may have been an outer ring of stones and a low mound over the site. Unfortunately the monument was badly destroyed by quarrymen before it was excavated in 1848. Finds from the site include fragments of decorated pottery, polished stone axes, stone pendants and a Roman gaming piece.
This Neolithic passage grave was built around 6,000 years ago (c. 4000-3250 BC).It consists of a passage leading into an oval chamber with four internal cells.